AW: [STANDARDS] Use declaration outside of namespace

> -----Ursprüngliche Nachricht-----
> Von: [email protected] [mailto:[email protected]] Im Auftrag von Chris Wright
> Gesendet: Mittwoch, 29. Oktober 2014 13:38
> An: Robert Stoll
> Cc: [email protected]
> Betreff: Re: [STANDARDS] Use declaration outside of namespace
> 
> On 29 October 2014 09:12, Robert Stoll <[email protected]> wrote:
> 
> > Heya,
> >
> > I always found it very ugly that it is possible to define a use
> > outside of a namespace. Consider the following:
> >
> > use foo\Bar;
> > namespace test;
> > new Bar(); //error, test\Barnot found
> >
> > I do not see why we should actually support this behaviour in the
> > specification of PHP. I do not see it as a bug in the current PHP
> > implementation but I think we should consider to remove it in PHP 7.
> > Although, it is not a bug, the use declaration is simply ignored as
> > far as I can tell, but I suppose it confuses the user. Nevertheless,
> > even if we declare it as a "feature" I think it should not be a
> > "feature" of the specification.
> >
> > Thoughts?
> >
> >
> TL;DR if you revise wording of the suggested change from "outside of a namespace" to "before a namespace declaration",
> +1
> 
> Removing the ability "use" things outside a namespace is not acceptable to me. I have often written quick scripts that use
> things from many namespaces but don't belong in a specific namespace, and in those cases I usually don't declare a
> namespace (it's also worth noting that you're never "outside a namespace", you're just in the root namespace by default).
> 
> That said, placing the "use" statements before the namespace declaration doesn't make a whole bunch of sense and
> should probably be explicitly disallowed. The fact that it works in php-src at the moment is arguably an oversight, if you try
> to actually *do* anything before the namespace declaration you even get an error stating that it "has to be the very first
> statement in the script" - so this case should probably be disallowed.
> 
> Thanks, Chris
> 
> 
> > Cheers,
> > Robert
> >
> >

To  be clear on this. I am not speaking about statements "outside" of a namespace (which is not possible as you mentioned as well). I am speaking about "use declarations" outside of a namespace and with outside I mean actually outside.

As you mentioned, when one tries to do the following

$a = 1;
namespace test;

This will fail because $a is outside of a namespace (you will get the error message "Namespace declaration statement has to be the very first statement in the script")
Maybe it was not clear enough, so I am going to rewrite my example to be clearer:

namespace{ //default namespace
  $a = 1;
}
use foo\Bar;
namespace test{
  new Bar();
}

I hope that clears things up.

Cheers,
Robert